The roots of the function f(x) = x2 – 2x – 3 are shown. what is the missing number? x = –1 and x =
2 answers:
We start with
To find the roots, set the function to zero
Cluster like terms and shift the constant to the opposite side
Complete the square, ensuring to maintain equation balance by adding the same constants to both sides.
Rewrite in the form of perfect squares
Take the square root of both sides
Thus,
the answer is
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Answer:
You need to multiply the denorminator both sides in order to form x note the subject:
Answer:
840
Step-by-step explanation:
As the arrangement matters, we apply the permutations formula to find the solution.
Permutations formula:
The count of possible arrangements of x items chosen from a total of n items is defined by this formula:
For this problem:
Jose occupies the first seat.
The other four can be arranged among the remaining 7 family members. Thus
Hence, the final answer is:
840